I’m sorry but we can’t troubleshoot your code, that’s your responsibility! The issue is likely because you are using incorrect case when trying to load the file, as described in the troubleshooting guide I linked. Please ensure you match the upper/lower case of all letters when referencing a file.
If you have found a solution to your problem then I also recommend posting that here so others who may have a similar issue can be helped in the finding a solution.